-LRB- CNN -RRB- -- It 's become a popular segment on his show , and Jimmy Fallon 's latest lip-sync battle featured `` The Voice '' coaches Gwen Stefani and Blake Shelton .

So what happens when `` The Tonight Show '' host has two popular singers perform songs by not actually singing ? A whole bunch of awesome , apparently .

The setup is simple : Each celebrity contestant selects a song and then lip-syncs a snippet .

Shelton kicked it off with Taco 's '80s hit `` Puttin ' on the Ritz , '' including some faux tap dancing . That was followed by Fallon 's version of Ellie Goulding 's `` Burn , '' and Stefani ended the round with `` Call Me Maybe '' by Carly Rae Jepsen .

The trio seemed evenly matched until Stefani and Shelton took it to a new level . In a hilarious duet of `` Endless Love , '' Stefani did the Lionel Richie part and Shelton subbed for Diana Ross .

Who do you think won ?

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Gwen Stefani and Blake Shelton both lip-sync for Jimmy Fallon

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`` The Voice '' coaches team up for a `` duet ''

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Lip-sync battles are popular feature of `` The Tonight Show Starring Jimmy Fallon ''